> On Dec 19, 2023, at 15:55, peterx@xxxxxxxxxx wrote: > > From: Peter Xu <peterx@xxxxxxxxxx> > > Introduce per-vma begin()/end() helpers for pgtable walks. This is a > preparation work to merge hugetlb pgtable walkers with generic mm. > > The helpers need to be called before and after a pgtable walk, will start > to be needed if the pgtable walker code supports hugetlb pages. It's a > hook point for any type of VMA, but for now only hugetlb uses it to > stablize the pgtable pages from getting away (due to possible pmd > unsharing). > > Reviewed-by: Christoph Hellwig <hch@xxxxxxxxxxxxx> > Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Thanks.
